CN101930069A - Virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing - Google Patents
Virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing Download PDFInfo
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- CN101930069A CN101930069A CN 201010166922 CN201010166922A CN101930069A CN 101930069 A CN101930069 A CN 101930069A CN 201010166922 CN201010166922 CN 201010166922 CN 201010166922 A CN201010166922 A CN 201010166922A CN 101930069 A CN101930069 A CN 101930069A
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Abstract
The invention relates to virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing. The virtual instrument based system comprises a virtual instrument system, a 12-way energy converter array, an energy converter array controller and a UPS (Uninterruptible Power Supply), wherein the energy converter array controller can control a 24-way energy converter array, the virtual instrument system comprises a high-voltage pulse generator, a signal amplifier, a high-speed signal collector and a mini-size industrial personal computer which are all provided with PXI interfaces, wherein the mini-size industrial personal computer is equipped with a Labview software program. The invention adopts the integrated design, thereby having compact structure and being convenient for carrying, remote transportation and outdoor work; the invention adopts human-machine interface, thereby having high intellectualization and integration degree and simple operation procedure; the invention adopts a rough detection process and a detailed detection process, can reach an area of 60cm through primary rough detection, can detect structures with high requirements for resolution ratio through detailed detection and achieve the resolution ratio of 1cm; and the system can remotely control the signal amplifier and the energy converter array, and the detection function of the system can be fulfilled by only operating the industrial personal computer.
Description
Technical field
The present invention relates to a kind of ultrasonic imaging nondestructive detection system and method thereof, specifically, relate to a kind of ultrasonic imaging by synthetic aperture focusing detection system and method thereof based on virtual instrument.
Background technology
The ultrasonic noninvasive imaging Detection Techniques of concrete help to assess the stability and the globality of new and old building thing, can do quality state in whole or in part to the new and old building thing monitors, can be used for estimating the character and the performance of building materials and structure, and can measure and locate its interior moisture content, defective and damage, can also be used for determining the position of the prestressed element of building materials and inside configuration, with the damage of avoiding when building materials is holed, meeting accident.
Along with concrete extensive use, needs to feature detection such as the intensity of new casting concrete structure, inherent vice, cracks are more and more urgent, both at home and abroad the exploitation of checkout equipment is very paid close attention to, developed the iTecs system as Japanese Ritec company, U.S. Olson company has developed the impact echo instrument, and these instruments all are by spot measurement, echo is calculated indirectly, need professional's interpretation, can't show the feature of xoncrete structure inside intuitively, and efficient is low.At publication number is CN1521503A, in the Chinese patent of denomination of invention " digital phased-array ultrasonic nondestructive detection system and method ", a kind of digital phased-array ultrasonic nondestructive detection system is disclosed, its operand is a metal construction, detection efficiency is not high, and its texture ratio is huger, moves difficulty.At application number is CN200610009691, denomination of invention discloses a kind of ultrasonic phased array inspection instrument in the Chinese patent of " ultrasonic phased array inspection instrument ", after the data of its collection need be handled in controller, pass to personal computer through the high speed data transfer module then and carry out imaging, its system complex, data handling procedure is loaded down with trivial details, be not suitable for engineering and use, and it is not at xoncrete structure.
In a word, existing checkout equipment mainly exists following weak point: 1) complex structure, and structure is huge; 2) complicated operation, data processing is loaded down with trivial details; 3) detection efficiency is not high.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, a kind of ultrasonic imaging by synthetic aperture focusing detection system based on virtual instrument is provided.
Ultrasonic imaging by synthetic aperture focusing detection system based on virtual instrument of the present invention, comprise virtual instrument system, 12 road transducer arrays, can control the transducer array controller and the UPS uninterrupted power source of 24 road transducer arrays, said virtual instrument system comprises high-voltage pulse generator, signal amplifier, high-speed signal acquisition device and the miniature industrial computer of being furnished with the Labview software program, all have the PXI interface, miniature industrial computer has touch-screen, high-voltage pulse generator, signal amplifier and high-speed signal acquisition device are integrated in the miniature industrial computer, the serial communication port of said miniature industrial computer is connected by shielded cable with the transducer array controller, guarantee the reliability of communication, said transducer array controller adopts the shielding coaxial cable of SMA interface to be connected with transducer array, this interface volume is little, withstand voltage height, the frequency height of transmission signals, it is little to decay, be convenient to the accurate transmission of high voltagehigh frequency pulse, said high-voltage pulse generator adopts the coaxial cable of the low decay of high frequency of bnc interface to be connected with high-speed signal acquisition device and transducer array controller, guarantees to transmit and the undistorted transmission of acquired signal.
Preferably,
CPU in the said transducer array controller is the ARM single-chip microcomputer, and relay is the high voltagehigh frequency of an anti-500V hilted broadsword two-way relay.
Said transducer array adopts polypropylene duroplasts clamping transducer, and interlayer is provided with spring, and bottom is provided with polyamine fat resilient material, and the vibrations of buffering sound wave reduce the coupling between adjacency channel.
Ultrasonic imaging by synthetic aperture focusing detection method based on virtual instrument of the present invention comprises the following steps:
1) transducer array is placed body structure surface to be measured;
2) open high-voltage pulse generator;
3) operate miniature industrial computer, operation Labview software program enters man-machine interface;
4) the conditioning signal amplifier is provided with acquisition parameter;
5) select " manually gathering " or " gathering automatically ", select " Rough Inspection " or " examining ";
6) begin to gather: miniature industrial computer is communicated by letter with the transducer array controller by serial ports and it is sent instruction, finish control by it to transducer array, transducer array is treated geodesic structure automatically by the instruction switching and is scanned detection, preserves image data after the been scanned;
7) select "Yes" or "No" to finish to gather, select "No", continue to get back to previous step and proceed data acquisition;
8) select "Yes", finish to gather, carry out data processing and ultrasonic imaging, preserve image.
Among the present invention in the detection system, industrial computer is a main control system, set up man-machine interface and realize collection, processing, the imaging of signal with Labview software, ARM single chip communication by serial ports and transducer array controller comes the array of controls transducer, control the break-make of high-voltage pulse passage and signal sampling channel by control transducer array controller repeat circuit, thereby transducer is in and transmits or receiving state signal in the decision transducer array.
High-voltage pulse generator has two passage output signals, one passage is the two exponential wave signals of 400V, one passage is the two exponential wave signals of synchronous 5V, and high-voltage signal is by transducer array controller excitation transducer array, and low-voltage signal connects the trigger port of high speed acquisition device as trigger pip.
Signal amplifier has four paths, has program control adjustable function, promptly can pass through its gain of software adjustment, its gain margin is 2～70 times, have nothing in common with each other for its echoed signal of different blended Xtah Crude Clay structure, can transfer big its gain, can turn its gain down strong signal to feeble signal.
The high-speed signal acquisition device can two passages of synchronous acquisition input signal, maximum sampling rate can reach 65MHz, also available VC++ or Matlab edit it, control and set acquisition parameter.Can be (1～1) V and (5～5) V by software adjustment received signal scope, its triggering mode can be selected internal trigger and external trigger for use during acquired signal, system is for guaranteeing the integrality of sampled signal, select external trigger for use, the low-voltage signal that produces by high-voltage pulse generator spare is as its trigger pip.
Transducer array has adopted many groups transducer, when system carries out signal emission or reception by transducer array, because the process deviation that transducer is made causes the inconsistency of its Frequency Response, the echoed signal that obtains certainly exists difference, this will influence imaging effect and reduce the detection resolving power, adopts a kind of improving one's methods based on the digital filtering compensation for this reason.The process of digital filtering is actually according to the System Discrimination algorithm and changes the relative scale of the contained frequency content of input signal or the process of some frequency content of filtering, its key is the transport function that solves filtering system, consider that the transducer array employing switches in proper order, choosing one group of the highest transducer of centre frequency precision by test of many times is the normal response signal, it is system's output function, with the input function of other passages as system, by obtaining transport function, make each access detection signal compensate, realize the frequency response unanimity of each passage by ssystem transfer function separately.
The transducer array controller can be communicated by letter with virtual instrument system, receives instruction.Chargeable lithium cell is equipped with in inside, is implemented under the situation of no external power source self-poweredly, and also changeable is external power source state or lithium cell charging state.
Ups power can be implemented under the civil power sudden power situation uninterrupted power supply of the system of realization, and sustainable power supply 5 hours transfers civil power to system's power supply and charge a battery automatically having under the civil power situation.
Detection system of the present invention can be installed on the miniature instrument car, is convenient to large tracts of land and detects and open-air detection.
Miniature industrial computer is set up with the ARM single-chip microcomputer of transducer array controller by Labview software and is communicated by letter, by the communication protocol sending controling instruction, the ARM single-chip microcomputer is received the instruction back by existing 24 road relay on-offs control of its GPIO cause for gossip of ADS software setting transducer array channel selecting.Each passage of transducer array is switched excitation by geodesic structure by order, and each passage is made up of two transducers, the received signal that transmits, and realization is to by the horizontal or vertical quick detection of geodesic structure.By digital compensation filter each transducer passage is proofreaied and correct after signals collecting finishes, utilized wavelet transformation and Bo Bao decomposition technique that signal is handled, adopt the imaging of synthetic aperture focusing technology to show.
The present invention compared with prior art has following technique effect:
1, adopt integrated design, reduced the volume of system greatly, had miniature large-capacity ups power supply in addition, compact conformation, easy to carry, be convenient to long-distance transport and field work;
2, adopt man-machine interface, intelligent, integrated degree height, operating process is simple, is convenient to engineering and uses;
3, Design of System Software Rough Inspection and examining, one-time detection can reach the 60cm zone during Rough Inspection, detects can to adopt examining to the high structure of resolution requirement, resolution can reach 1cm.
4, system can be program control to signal amplifier and the control of array energy transducer array, promptly only by the measuring ability of operation industrial computer with regard to feasible system.
Description of drawings
Fig. 1 is the structural representation based on the ultrasonic imaging by synthetic aperture focusing detection system of virtual instrument of embodiments of the invention 1;
Fig. 2 is the process flow diagram based on the ultrasonic imaging by synthetic aperture focusing detection method of virtual instrument of embodiments of the invention 2;
Fig. 3 is the workflow diagram of the system of embodiments of the invention 2 to the transducer array switching controls;
Fig. 4 is the pre-buried foam test block of the inside concrete of the embodiment of the invention 3 synoptic diagram;
Fig. 5 is the pre-buried foam test block of the inside concrete of the embodiment of the invention 3 image.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, ultrasonic imaging by synthetic aperture focusing detection system based on virtual instrument of the present invention, comprise virtual instrument system, 12 road transducer arrays, can control the transducer array controller and the UPS uninterrupted power source of 24 road transducer arrays, wherein virtual instrument system comprises high-voltage pulse generator, signal amplifier, high-speed signal acquisition device and the miniature industrial computer of being furnished with the Labview software program, all have the PXI interface, miniature industrial computer has touch-screen, high-voltage pulse generator, signal amplifier and high-speed signal acquisition device are integrated in the miniature industrial computer, the RS232 serial communication port that passes through of miniature industrial computer is connected by shielded cable with the transducer array controller, guarantee the reliability of communication, the transducer array controller adopts the shielding coaxial cable of SMA interface to be connected with transducer array, this interface volume is little, withstand voltage height, the frequency height of transmission signals, it is little to decay, be convenient to the accurate transmission of high voltagehigh frequency pulse, high-voltage pulse generator adopts the coaxial cable of the low decay of high frequency of bnc interface to be connected with high-speed signal acquisition device and transducer array controller, guarantees to transmit and the undistorted transmission of acquired signal.CPU in the transducer array controller is the ARM single-chip microcomputer, and relay is the high voltagehigh frequency of an anti-500V hilted broadsword two-way relay.Transducer array adopts polypropylene duroplasts clamping transducer, and interlayer is provided with spring, and bottom is provided with polyamine fat resilient material, and the vibrations of buffering sound wave reduce the coupling between adjacency channel.
Embodiment 2
As Fig. 2, shown in Figure 3, the step of the ultrasonic imaging by synthetic aperture focusing detection system based on virtual instrument of the present invention is as follows:
1) transducer array is placed body structure surface to be measured;
2) open high-voltage pulsed source;
3) operate miniature industrial computer, operation Labview software program enters man-machine interface;
4) the conditioning signal amplifier is provided with acquisition parameter; The gain of resonance-amplifier in advance makes the acquired signal amplitude moderate;
5) select " manually gathering " or " gathering automatically ", select " Rough Inspection " or " examining "; Manually collection can check carefully whether acquired signal is stable, but each passage needs artificial storage data when gathering.Also can select Rough Inspection or examining when gathering automatically or manually gathering, Rough Inspection is that one-time detection is the length of transducer array, and its minimum resolution is 4cm, improve resolution if desired, then can select examining, a moving step length of examining is 1cm, so its minimum resolution can reach 1cm.
6) begin to gather: miniature industrial computer is communicated by letter with the transducer array controller by serial ports and it is sent instruction, and the transducer array controller receives instruction, receives whether instruction back decision instruction is correct, if mistake is returned error message; If correct, execution command.The actuating of relay makes the high-voltage pulse sequential energisation of generation treat geodesic structure, scans detection, preserves image data after the been scanned;
7) select "Yes" or "No" to finish to gather, select "No", continue to get back to previous step and proceed data acquisition;
8) select "Yes", finish to gather, carry out data processing and ultrasonic imaging, preserve image.For follow-up detection for referencial use or standby.
Embodiment 3
Using detection system of the present invention is 30cm to thickness, and the centre is embedded with the concrete test block that length is the 15cm foam (as shown in Figure 4) and detects, with the array scanning device to its scanning imagery.As can be seen from Figure 5, dotted line is represented the basal surface position of test block, and test block ground surface imaging is very fuzzy, shows that its reflected signal strength is very little, is that ultrasound wave is absorbed the result that reflection wave weakens.
Claims (4)
1. based on the ultrasonic imaging by synthetic aperture focusing detection system of virtual instrument, it is characterized in that, comprise virtual instrument system, 12 road transducer arrays, can control the transducer array controller and the UPS uninterrupted power source of 24 road transducer arrays, said virtual instrument system comprises high-voltage pulse generator, signal amplifier, high-speed signal acquisition device and the miniature industrial computer of being furnished with the Labview software program, all have the PXI interface, miniature industrial computer has touch-screen, high-voltage pulse generator, signal amplifier and high-speed signal acquisition device are integrated in the miniature industrial computer, the serial communication port of said miniature industrial computer is connected by shielded cable with the transducer array controller, said transducer array controller adopts the shielding coaxial cable of SMA interface to be connected with transducer array, and said high-voltage pulse generator adopts the coaxial cable of the low decay of high frequency of bnc interface to be connected with high-speed signal acquisition device and transducer array controller.
2. the ultrasonic imaging by synthetic aperture focusing detection system based on virtual instrument according to claim 1 is characterized in that the CPU in the said transducer array controller is the ARM single-chip microcomputer, and relay is the high voltagehigh frequency of an anti-500V hilted broadsword two-way relay.
3. the ultrasonic imaging by synthetic aperture focusing detection system based on virtual instrument according to claim 2 is characterized in that, adopts polypropylene duroplasts clamping transducer in the said transducer array, and interlayer is provided with spring, and bottom is provided with polyamine fat resilient material.
4. based on the ultrasonic imaging by synthetic aperture focusing detection method of virtual instrument, it is characterized in that, comprise the following steps:
1) transducer array is placed body structure surface to be measured;
2) open high-voltage pulse generator;
3) operate miniature industrial computer, operation Labview software program enters man-machine interface;
4) the conditioning signal amplifier is provided with acquisition parameter;
5) select " manually gathering " or " gathering automatically ", select " Rough Inspection " or " examining ";
6) begin to gather: miniature industrial computer is communicated by letter with the transducer array controller by serial ports and it is sent instruction, finish control by it to transducer array, transducer array is treated geodesic structure automatically by the instruction switching and is scanned detection, preserves image data after the been scanned;
7) select "Yes" or "No" to finish to gather, select "No", continue to get back to previous step and proceed data acquisition;
8) select "Yes", finish to gather, carry out data processing and ultrasonic imaging, preserve image.
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| CN102169169A (en) * | 2010-12-31 | 2011-08-31 | 上海市城市建设设计研究院 | Digitalized automatic acquisition method, device and system thereof for magnetic exploration instrument |
| CN102539532A (en) * | 2011-12-31 | 2012-07-04 | 中南大学 | Ultrasonic C scanning imaging method based on two-dimensional neighborhood synthetic aperture focusing |
| CN102590355A (en) * | 2012-01-16 | 2012-07-18 | 北京理工大学 | Pulse ultrasonic flaw detector property measuring system |
| CN102680571A (en) * | 2012-05-23 | 2012-09-19 | 北京理工大学 | Flaw detector blocking time measuring device |
| CN102854251A (en) * | 2012-08-29 | 2013-01-02 | 北京工业大学 | Supersonic imaging system utilizing virtual instrument technology, and imaging method thereof. |
| CN102895000A (en) * | 2012-11-06 | 2013-01-30 | 重庆大学 | Double-focusing beamforming method based on self-adaptive weighting |
| CN103018333A (en) * | 2012-12-07 | 2013-04-03 | 清华大学 | Synthetic aperture focused ultrasonic imaging method of layered object |
| CN104090031A (en) * | 2014-07-16 | 2014-10-08 | 浙江省交通规划设计研究院 | Prestressed duct grouting quality detection device based on supersonic annular phase control array |
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| CN107632071A (en) * | 2017-08-18 | 2018-01-26 | 中车青岛四方机车车辆股份有限公司 | Bolt detection means and bolt detection method |
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| CN109276276A (en) * | 2018-08-24 | 2019-01-29 | 广东省医疗器械质量监督检验所 | Ultrasonic based endoscopic imaging device and method based on Labview platform |
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| CN112857409A (en) * | 2020-12-31 | 2021-05-28 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Automatic data acquisition and analysis system of cold atom interferometer |
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| CN102539532A (en) * | 2011-12-31 | 2012-07-04 | 中南大学 | Ultrasonic C scanning imaging method based on two-dimensional neighborhood synthetic aperture focusing |
| CN102539532B (en) * | 2011-12-31 | 2013-06-26 | 中南大学 | Ultrasonic C scanning imaging method based on two-dimensional neighborhood synthetic aperture focusing |
| CN102590355A (en) * | 2012-01-16 | 2012-07-18 | 北京理工大学 | Pulse ultrasonic flaw detector property measuring system |
| CN102680571A (en) * | 2012-05-23 | 2012-09-19 | 北京理工大学 | Flaw detector blocking time measuring device |
| CN102854251A (en) * | 2012-08-29 | 2013-01-02 | 北京工业大学 | Supersonic imaging system utilizing virtual instrument technology, and imaging method thereof. |
| CN102854251B (en) * | 2012-08-29 | 2015-05-20 | 北京工业大学 | Supersonic imaging system utilizing virtual instrument technology, and imaging method thereof |
| CN102895000A (en) * | 2012-11-06 | 2013-01-30 | 重庆大学 | Double-focusing beamforming method based on self-adaptive weighting |
| CN102895000B (en) * | 2012-11-06 | 2014-06-18 | 重庆大学 | Double-focusing beamforming method based on self-adaptive weighting |
| CN103018333B (en) * | 2012-12-07 | 2014-10-29 | 清华大学 | Synthetic aperture focused ultrasonic imaging method of layered object |
| CN103018333A (en) * | 2012-12-07 | 2013-04-03 | 清华大学 | Synthetic aperture focused ultrasonic imaging method of layered object |
| CN104090031A (en) * | 2014-07-16 | 2014-10-08 | 浙江省交通规划设计研究院 | Prestressed duct grouting quality detection device based on supersonic annular phase control array |
| CN104090031B (en) * | 2014-07-16 | 2016-05-11 | 浙江省交通规划设计研究院 | A kind of pumping of prostressed duct quality detection device based on Ultrasonic Annular Phased Arrays |
| CN105067705A (en) * | 2015-07-25 | 2015-11-18 | 南昌航空大学 | Ultrasonic nondestructive detection characteristic imaging system based on LabVIEW |
| CN107632071A (en) * | 2017-08-18 | 2018-01-26 | 中车青岛四方机车车辆股份有限公司 | Bolt detection means and bolt detection method |
| CN107798674B (en) * | 2017-09-15 | 2021-04-23 | 华南理工大学 | Method for eliminating false detection result of surface structure of metal workpiece |
| CN107798674A (en) * | 2017-09-15 | 2018-03-13 | 华南理工大学 | A kind of method for removing of surface of workpiece structure flase drop result |
| CN108344801A (en) * | 2018-01-10 | 2018-07-31 | 北京铁科工程检测中心 | II plate-type ballastless track mortar bond quality detection devices of CRTS and method |
| CN109276276A (en) * | 2018-08-24 | 2019-01-29 | 广东省医疗器械质量监督检验所 | Ultrasonic based endoscopic imaging device and method based on Labview platform |
| CN111707694A (en) * | 2020-03-27 | 2020-09-25 | 西安石油大学 | Design method of NQR phased excitation pulse generator |
| CN111707694B (en) * | 2020-03-27 | 2023-09-29 | 西安石油大学 | Design method of NQR phase-control excitation pulse generator |
| CN112857409A (en) * | 2020-12-31 | 2021-05-28 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Automatic data acquisition and analysis system of cold atom interferometer |
| CN112857409B (en) * | 2020-12-31 | 2022-08-09 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Automatic data acquisition and analysis system of cold atom interferometer |
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Application publication date: 20101229 |